The Dongwu Regency
According to the surviving accounts, Zhu Changqing was proclaimed regent in 1648 on Nan'ao Island, off the coast of Guangdong, taking the era name Dongwu, meaning "Martial East". The accounts connect his regency with Zheng Chenggong, better known as Koxinga, the loyalist commander who controlled much of the south-east coast and resisted the Qing for many years.
His formal title was jianguo, "supervisor of the state". Traditionally it was held by a prince or heir who ran the government while the ruler was absent. During the Southern Ming several princes took it to lead loyalist governments without formally claiming the throne.
His position depended on the commanders around him. In 1649, the same accounts say, the Yongli court sent an envoy to Nan'ao to ask him to give up his claim, and Koxinga, persuaded that the resistance needed a single sovereign, recognised the Yongli Emperor.